- Well Constructed of Hardened and Durable Seel, This MC4 Cripmer Tool Will Provide Years of Reliable Services.- Designed with Precision Dies and Ratcheting Mechanism for Quality Crimps. For Different Sizes of Solar Panel PV Cables(2.5/4/6.0mm2).- Easy to Operate While Using Pliers, Just Insert the Top into Its Position and Press It.- Ergonomic Design. Soft Grip and Mechanical Force Multiplication Reduce Hand Fatigue Under Continuous Use- Length:8.66 Inches. Item Weight: approx 1.08 Pounds. This MC4 Crimping Tool is Easy To Handle.